Allow \SensioLabs\AnsiConverter\AnsiToHtmlConverter to be injected

[rquadling]

As a consequence, the need to be able to set a theme at run time, rather
than at compile time is necessary.

Also added PHPUnit require-dev support and added tests to show the theme
can be injected and overridden.

[fabpot]

That should be removed, I never require phpunit in my composer.json. We can use symfony/phpunit-bridge instead.

[rquadling]

It is require-dev, so isn't part of the deployment requirement. The use case for its presence is for a standalone package. I've not used symfony/phpunit-bridge, so can you show me what this should be please?

[rquadling]

Hi.

I don't know what what should be here if you want to run phpunit in travis.
Having also dropped support for PHP < 7, there's a minimum version of PHPUnit of 6 (it seems).

If you can "fix" this so that the tests are run in travis, then I'd be happy with that.

[rquadling]

At this stage, I'd be dropping PHP 5.3. It IS end of life and I wonder if the tests ever passed.

If a new major release was created for this PR, then that would be the time to drop 5.3 (and maybe 5.4 also).

[rquadling]

@fabpot Any idea on what I can do for the failing unit tests on PHP 5.3? Also, can you give me some more info on the PHPUnit issue in the composer.json. Happy to fix things.

[rquadling]

https://3v4l.org/oqB5b

Testing the regex against one of the unit tests ansi encoded strings.

Output for 5.4.0 - 5.6.30, hhvm-3.10.1 - 3.19.0, 7.0.0 - 7.1.4 is all OK

Output for 4.3.0 - 5.3.29 fails

In further examination, this seems to be due to PHP <5.4 not understanding escape in a string.

At this stage, I'd say dropping PHP < 5.4 is a reasonable proposition.